Resource Mapping and Waveform Generation for Uplink Transmission

3. The method of claim 1, further comprising determining a waveform configuration of the random access channel uplink transmission based at least in part on the random access channel uplink transmission being asynchronous, wherein the signal is based at least in part on determining the waveform configuration of the random access channel uplink transmission.

4. The method of claim 3, wherein the waveform configuration is a static configuration stored by the user equipment.

5. The method of claim 1, further comprising determining the signal to transmit during the guard time associated with the preamble based at least in part on that the random access channel uplink transmission being asynchronous.

6. The method of claim 5, wherein determining the signal comprises extending, cyclically, a waveform of the preamble for at least a portion of the duration of the guard time associated with the preamble, wherein the extended waveform of the preamble comprises a cyclic postfix of the preamble.

7. The method of claim 5, wherein determining the signal comprises extending a waveform of the payload for at least a portion of the duration of the guard time associated with the preamble, wherein the extended waveform of the payload comprises a cyclic prefix of the payload.

8. The method of claim 5, wherein determining the signal further comprises generating a weighted overlap and add (WOLA) to be transmitted between the preamble and the payload, wherein the signal comprises the WOLA.

9. The method of claim 8, wherein the duration of timing advance adjustment and a duration of the WOLA is equal to the duration of the guard time associated with the preamble.

10. The method of claim 1, wherein the duration of timing advance adjustment and a duration of the signal is equal to the duration of the guard time associated with the preamble.

11. The method of claim 1, wherein the preamble is configured to be processed by a network entity for channel estimation associated with the payload based at least in part on the mapping.

12. The method of claim 1, wherein the payload of the random access channel uplink transmission comprises one or more of a demodulation reference signal, a physical uplink shared channel, or a guard time.

13. The method of claim 1, further comprising determining that the random access channel uplink transmission is asynchronous.

15. The UE of claim 14, wherein the processing system is further configured to cause the UE to determine that the random access channel uplink transmission is asynchronous.

16. The UE of claim 14, wherein the processing system is further configured to cause the UE to determine the signal to transmit during the guard time associated with the preamble based at least in part on the random access channel uplink transmission being asynchronous.

17. The UE of claim 16, wherein, to determine the signal, the processing system is configured to cause the UE to extend, cyclically, a waveform of the preamble for at least a portion of the duration of the guard time associated with the preamble, wherein the extended waveform of the preamble comprises a cyclic postfix of the preamble.

18. The UE of claim 16, wherein, to determine the signal, the processing system is configured to cause the UE to extend a waveform of the payload for at least a portion of the duration of the guard time associated with the preamble, wherein the extended waveform of the payload comprises a cyclic prefix of the payload.

20. The UE of claim 19, wherein the duration of timing advance adjustment and a duration of the WOLA signal is equal to the duration of the guard time associated with the preamble.

22. The UE of claim 14, wherein the processing system is further configured to cause the UE to determine a waveform configuration of the random access channel uplink transmission based at least in part on the random access channel uplink transmission being asynchronous, wherein the signal is based at least in part on determining the waveform configuration of the random access channel uplink transmission.

23. The UE of claim 22, wherein the waveform configuration is a static configuration stored by the user equipment.

24. The UE of claim 14, wherein the duration of timing advance adjustment and a duration of the signal is equal to the duration of the guard time associated with the preamble.

25. The UE of claim 14, wherein the preamble is configured to be processed by a network entity for channel estimation associated with the payload based at least in part on the mapping.

26. The UE of claim 14, wherein the payload of the random access channel uplink transmission comprises one or more of a demodulation reference signal, a physical uplink shared channel, or a guard time.